A 25-year-old woman presented with fatigue, shortness of breath, and easy bruising. Her complete blood count revealed pancytopenia, characterized by a significant decrease in red blood cells, white blood cells, and platelets. A bone marrow biopsy confirmed severe hypocellularity, consistent with aplastic anemia. Further investigations, including viral serology, revealed a recent viral infection that can cause transient bone marrow suppression in immunocompetent individuals. Which of the following viruses can cause aplastic anemia?
